A US woman who shot and killed her husband and two adult children before taking her own life is thought to have committed the shocking crime as a result of being ostracised from the religion she was raised in.

A federal judge sentenced a former Arkansas judge Wednesday to five years in prison — a stiffer punishment than prosecutors recommended — after he admitted giving young male defendants lighter sentences in return for personal benefits that included sexual favours.

Every time I tell a mate I’m doing a story on cryptocurrency, they invariably ask me the same two questions: should they invest their own hard-earned money, and which cryptocurrency will get them a Lamborghini/yacht/island quickest?

In a 60 Minutes online exclusive, reporter Liz Hayes quizzed Australian Prime Minister Malcolm Turnbull on his relationship with the unpredictable Twitter aficionado and US president Donald Trump ahead of their meeting at the White House Friday.

Two Qld officers charged over driving

Two Queensland police officers have been charged over a Gold Coast car chase.

A 50-year-old male senior constable faces both the charge of acts intended to cause grievous bodily harm and another of dangerous operation of a motor vehicle and will appear in the Southport Magistrates Court next month.

A 48-year-old male senior sergeant will face the same court next week after being charged with two counts of the dangerous operation of a motor vehicle.

Both officers were currently suspended, police said.

The car chase unfolded at Pacific Pines on the Gold Coast.

"In keeping with our commitment to high standards of behaviour, transparency and accountability, we have undertaken to inform the public when an officer faces serious allegations of misconduct," police said in a statement.

"This does not mean that the allegations against the officer have been substantiated."